From bf996f7247133c536511c23b6ad30aa222bfd6d9 Mon Sep 17 00:00:00 2001
From: Thomas Lange <code@nerdmind.de>
Date: Wed, 15 Apr 2015 21:29:19 +0200
Subject: Initial commit

---
 include/classes/class.bigpipe.php | 79 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 79 insertions(+)
 create mode 100755 include/classes/class.bigpipe.php

(limited to 'include/classes/class.bigpipe.php')

diff --git a/include/classes/class.bigpipe.php b/include/classes/class.bigpipe.php
new file mode 100755
index 0000000..1edefc8
--- /dev/null
+++ b/include/classes/class.bigpipe.php
@@ -0,0 +1,79 @@
+<?php
+class BigPipe {
+	public  static $enabled  = TRUE;
+	private static $pagelets = [];
+	private static $count    = 0;
+
+	#====================================================================================================
+	# Gibt TRUE zurück wenn BigPipe eingeschaltet ist
+	#====================================================================================================
+	public static function isEnabled() {
+		return self::$enabled ? TRUE : FALSE;
+	}
+
+	#====================================================================================================
+	# Neues Pagelet zur Pipeline hinzufügen
+	#====================================================================================================
+	public static function addPagelet(Pagelet $Pagelet, $priority) {
+		self::$pagelets[$priority][] = $Pagelet;
+		self::$count++;
+	}
+
+	#====================================================================================================
+	# Gibt einen einzelnen Pagelet-Response aus
+	#====================================================================================================
+	private static function pageletResponse(Pagelet $Pagelet, $async = FALSE, $last = FALSE) {
+		$data = [
+			'ID' => $Pagelet->getID(),
+			'RESOURCES' => ['CSS' => $Pagelet->getCSSFiles(), 'JS' => $Pagelet->getJSFiles(), 'JS_CODE' => removeLineBreaksAndTabs($Pagelet->getJSCode())]
+		];
+
+		if($last) {
+			$data['IS_LAST'] = true;
+		}
+
+		echo '<code class="hidden" id="_'.$data['ID'].'"><!-- '.str_replace('--', '&#45;&#45;', removeLineBreaksAndTabs($Pagelet->getHTML())).' --></code>'."\n";
+		echo '<script>BigPipe.onPageletArrive('.json_encode($data).($async ? ', document.getElementById("_'.$Pagelet->getID().'").innerHTML' : NULL).');</script>'."\n\n";
+	}
+
+	#====================================================================================================
+	# Sendet den Output-Buffer so weit wie möglich in Richtung User
+	#====================================================================================================
+	public static function flushOutputBuffer() {
+		ob_flush(); flush();
+	}
+
+	#====================================================================================================
+	# Alle Pagelets an Client schicken
+	#====================================================================================================
+	public static function render($async = FALSE) {
+		self::flushOutputBuffer();
+
+		$i = 0;
+
+		ksort(self::$pagelets);
+
+		foreach(array_reverse(self::$pagelets) as $priority => $pagelets) {
+			foreach($pagelets as $Pagelet) {
+				if(!self::isEnabled()) {
+					if($Pagelet->getJSCode()) {
+						echo '<script>'.$Pagelet->getJSCode().'</script>'."\n";
+					}
+
+					foreach($Pagelet->getCSSFiles() as $CSSFile) {
+						echo '<link href="'.$CSSFile.'" rel="stylesheet" />'."\n";
+					}
+
+					foreach($Pagelet->getJSFiles() as $JSFile) {
+						echo '<script src="'.$JSFile.'"></script>'."\n";
+					}
+				}
+
+				else {
+					self::pageletResponse($Pagelet, $async, (self::$count === ++$i));
+					self::flushOutputBuffer();
+				}
+			}
+		}
+	}
+}
\ No newline at end of file
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